公开(公告)号：EP2378701A1

公开(公告)日：2011-10-19

申请号：EP11174166.6

申请日：2003-10-29

申请人： Qualcomm Incorporated

发明人： Krishnan, Ranganathan ,  Vijayan, Rajiv ,  Kadous, Tamer

IPC分类号： H04L5/00

CPC分类号： H04W52/325 ,  H04L1/0004 ,  H04L1/1614 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0041 ,  H04L5/005 ,  H04L5/0053 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/023 ,  H04L25/03821 ,  H04L27/2607 ,  H04L27/2657 ,  H04L27/2662 ,  H04W52/225 ,  H04W52/346 ,  H04W52/42

摘要： Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing, M usable subbands in the system are partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for uplink pilot transmission. Multiple terminals may transmit simultaneously on their assigned subbands. The transmit power for the pilot may be scaled higher to attain the same total pilot energy even though S instead of M subbands are used for pilot transmission by each terminal. Pilot transmissions from the terminals are received, and a channel estimate is derived for each terminal based on the pilot received on the assigned subbands. The channel estimate comprises a response for additional subbands not included in the assigned group. Subband multiplexing may also be used for uplink signaling transmission.

摘要翻译： 用于在OFDM系统中更高效地在上行链路上发送导频和信令的技术。 通过子带复用，系统中M个可用的子带被划分成Q个不相交的子带组。 每个子带组可以被分配给用于上行链路导频传输的不同终端。 多个终端可以在其分配的子带上同时传输。 即使使用S而不是M个子带用于每个终端的导频传输，导频的发射功率也可以被调高以达到相同的总导频能量。 接收来自终端的导频传输，并基于在所分配的子带上接收的导频为每个终端导出信道估计。 信道估计包括对未包括在分配组中的附加子带的响应。 子带复用也可以用于上行链路信令传输。

公开(公告)号：EP2234282A1

公开(公告)日：2010-09-29

申请号：EP10168347.2

申请日：2003-10-14

申请人： Qualcomm Incorporated

发明人： Agrawal, Avneesh ,  Vijayan, Rajiv ,  Kadous, Tamer

IPC分类号： H04B7/00 ,  H04B7/02

CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流以对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以为多个天线提供多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以相关天线的（或接近）全功率发射。

公开(公告)号：EP2202929A1

公开(公告)日：2010-06-30

申请号：EP10157886.2

申请日：2004-12-03

申请人： Qualcomm Incorporated

发明人： Gore, Dhananjay,Ashok ,  Agrawal, Avneesh ,  Kadous, Tamer

IPC分类号： H04L25/02

CPC分类号： H04L25/0226 ,  H04B7/0452 ,  H04B7/0684 ,  H04L27/2613

摘要： A method of performing channel estimation at a receiver in a wireless multi-antenna communication system, comprising:
obtaining, via a single receive antenna, M received pilot symbols for M sets of T scaled pilot symbols generated with M different vectors of a matrix and transmitted via T transmit antennas, where T is an integer greater than one and M is an integer equal to or greater than T wherein each vector includes T coefficients, and wherein the coefficients in the M vectors are selected to facilitate channel estimation by both receivers with a single antenna and receivers with multiple antennas; and
filtering the M received pilot symbols to obtain an estimate of a composite multiple-input single-output (MISO) channel between the T transmit antennas and the single receive antenna.

摘要翻译： 一种在无线多天线通信系统中的接收机处执行信道估计的方法，包括：经由单个接收天线获得M个接收到的导频符号，用于M个不同的矩阵向量生成的T个缩放的导频符号组，并发送 通过T个发射天线，其中T是大于1的整数，M是等于或大于T的整数，其中每个向量包括T个系数，并且其中选择M个向量中的系数以促进两个接收机的信道估计，其中a 单天线和具有多个天线的接收机; 并对M个接收到的导频符号进行滤波以获得T个发射天线与单个接收天线之间的复合多输入单输出（MISO）信道的估计。

公开(公告)号：EP2202926A1

公开(公告)日：2010-06-30

申请号：EP10157850.8

申请日：2004-12-03

申请人： Qualcomm Incorporated

发明人： Gore, Dhananjay,Ashok ,  Agrawal, Avneesh ,  Kadous, Tamer

IPC分类号： H04L25/02 ,  H04B7/06

CPC分类号： H04L25/0226 ,  H04B7/0452 ,  H04B7/0684 ,  H04L27/2613

摘要： A method of transmitting a pilot in a wireless multi-antenna communication system, comprising: generating M sets of T scaled pilot symbols with M different vectors of a matrix, where T is an integer greater than one and M is an integer equal to or greater than T wherein each vector includes T coefficients; and
transmitting each of the M sets of T scaled pilot symbols from T transmit antennas, wherein the M sets of T scaled pilot symbols are suitable for use for channel estimation by both receivers with a single antenna and receivers with multiple antennas.
The M vectors are not orthogonal to one another and the multi-antenna communication system utilizes orthogonal frequency division multiplexing (OFDM). Furthermore, each of the T scaled pilot symbols in each set is transmitted from a respective one of the T transmit antennas on a group of P subbands.

摘要翻译： 在无线多天线通信系统中发送导频，的方法，包括：生成的T M组标导频符号与M个不同的矩阵，其中T是一个大于一的整数，M是等于或大于一个整数的向量 低于T worin每个矢量包括T个系数; 发送和各M组的T个定标在T的导频符号发射天线，worin M组T个定标导频符号适合于具有单个天线和接收器具有多个天线的使用的信道估计由两个接收器。 M个向量不是彼此正交和多天线通信系统中利用正交频分复用（OFDM）。 进一步，每个T形标导频符号在每个集合是从respectivement上的一组P个子带的T个发射天线中的一个的反式mitted。

公开(公告)号：EP1786134B1

公开(公告)日：2009-02-11

申请号：EP07103165.2

申请日：2003-02-27

申请人： Qualcomm Incorporated

发明人： Kadous, Tamer

IPC分类号： H04L1/00 ,  H04L1/20

CPC分类号： H04L1/20 ,  H04B7/0417 ,  H04L1/0002 ,  H04L1/0017 ,  H04L1/06 ,  H04L1/0631

公开(公告)号：EP2146455B1

公开(公告)日：2018-08-29

申请号：EP09174529.9

申请日：2004-09-09

申请人： Qualcomm Incorporated

发明人： Kadous, Tamer

IPC分类号： H04J11/00 ,  H03D1/00 ,  H04L1/18 ,  H04L1/00

CPC分类号： H04L1/1819 ,  H03M13/33 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0071 ,  H04L1/0618 ,  H04L1/1671 ,  H04L5/0023 ,  H04L5/0048 ,  H04L27/2626 ,  H04L27/2647

摘要： For an incremental redundancy (IR) transmission in a MIMO system, a transmitter processes (e.g., encodes, partitions, interleaves, and modulates) a data packet based on a selected rate to obtain multiple data symbol blocks. The transmitter transmits one data symbol block at a time until a receiver correctly recovers the data packet or all blocks are transmitted. Whenever a data symbol block is received from the transmitter, the receiver detects a received symbol block to obtain a detected symbol block, processes (e.g., demodulates, deinterleaves, re-assembles, and decodes) all detected symbol blocks obtained for the data packet, and provides a decoded packet. If the decoded packet is in error, then the receiver repeats the processing when another data symbol block is received for the data packet. The receiver may also perform iterative detection and decoding on the received symbol blocks for the data packet multiple times to obtain the decoded packet.

公开(公告)号：EP2549700B1

公开(公告)日：2016-01-20

申请号：EP12181133.5

申请日：2004-08-13

申请人： Qualcomm Incorporated

发明人： Kadous, Tamer

IPC分类号： H04L1/06 ,  H04L25/03 ,  H04B7/04 ,  H04L1/00 ,  H04L1/18

CPC分类号： H04L1/1819 ,  H04B7/0417 ,  H04L1/0002 ,  H04L1/0025 ,  H04L1/06 ,  H04L25/0328 ,  H04L27/2601 ,  H04W52/286 ,  Y02D50/10

摘要： For incremental redundancy transmission on multiple parallel channels in a MIMO system, a transmitter processes (e.g., encodes, partitions, interleaves, and modulates) each data packet for each parallel channel based on a rate selected for the parallel channel and obtains multiple symbol blocks for the packet. For each data packet, the transmitter transmits one symbol block at a time on its parallel channel until a receiver recovers the packet or all blocks have been transmitted. The receiver performs detection and obtains symbol blocks transmitted on the parallel channels. The receiver recovers the data packets transmitted on the parallel channels independently or in a designated order. The receiver processes (e.g., demodulates, deinterleaves, reassembles, and decodes) all symbol blocks obtained for each data packet and provides a decoded packet.; The receiver may estimate and cancel interference due to recovered data packets so that data packets recovered later can achieve higher SINRs.

公开(公告)号：EP2019504A3

公开(公告)日：2014-08-20

申请号：EP08018386.6

申请日：2006-04-03

申请人： Qualcomm Incorporated

发明人： Sampath, Hermanth ,  Gorokhov, Alexei ,  Khandekar, Aamod ,  Teague, Edward Harrison ,  Julian, David Jonathan ,  Kadous, Tamer ,  Sutivong, Arak c/o QUALCOMM Incorporated

IPC分类号： H04L1/00

CPC分类号： H04L1/0028 ,  H04L1/0026 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

摘要： Methods and apparatuses are disclosed for providing flexible channel information feedback. In some cases this may be according to reporting types assigned by one or more sectors, with different reporting types for each sector. In other cases, a reporting mode is determined to determine the reporting types to be utilized

公开(公告)号：EP2378701B1

公开(公告)日：2014-02-12

申请号：EP11174166.6

申请日：2003-10-29

申请人： Qualcomm Incorporated

发明人： Krishnan, Ranganathan ,  Vijayan, Rajiv ,  Kadous, Tamer

IPC分类号： H04L5/00 ,  H04L1/00 ,  H04L1/16 ,  H04L25/03 ,  H04W52/32 ,  H04L25/02 ,  H04L27/26 ,  H04W52/22 ,  H04W52/42 ,  H04W52/34

CPC分类号： H04W52/325 ,  H04L1/0004 ,  H04L1/1614 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0041 ,  H04L5/005 ,  H04L5/0053 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/023 ,  H04L25/03821 ,  H04L27/2607 ,  H04L27/2657 ,  H04L27/2662 ,  H04W52/225 ,  H04W52/346 ,  H04W52/42

公开(公告)号：EP2378700A1

公开(公告)日：2011-10-19

申请号：EP11174161.7

申请日：2003-10-29

申请人： Qualcomm Incorporated

发明人： Krishnan, Ranganathan ,  Vijayan, Rajiv ,  Kadous, Tamer

IPC分类号： H04L5/00

CPC分类号： H04W52/325 ,  H04L1/0004 ,  H04L1/1614 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0041 ,  H04L5/005 ,  H04L5/0053 ,  H04L25/0212 ,  H04L25/022 ,  H04L25/023 ,  H04L25/03821 ,  H04L27/2607 ,  H04L27/2657 ,  H04L27/2662 ,  H04W52/225 ,  H04W52/346 ,  H04W52/42

摘要： Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing, M usable subbands in the system are partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for uplink pilot transmission. Multiple terminals may transmit simultaneously on their assigned subbands. The transmit power for the pilot may be scaled higher to attain the same total pilot energy even though S instead of M subbands are used for pilot transmission by each terminal. Pilot transmissions from the terminals are received, and a channel estimate is derived for each terminal based on the pilot received on the assigned subbands. The channel estimate comprises a response for additional subbands not included in the assigned group. Subband multiplexing may also be used for uplink signaling transmission.

摘要翻译： 在OFDM系统中在上行链路上更有效地发送导频和信令的技术。 通过子带复用，系统中的M个可用子带被划分成Q个不相关的子带组。 每个子带组可被分配给用于上行链路导频传输的不同终端。 多个终端可以在其分配的子带上同时发送。 即使S代替M个子带用于每个终端的导频传输，导频的发射功率可以被更高地扩展以获得相同的总导频能量。 接收来自终端的导频传输，并且基于在所分配的子带上接收到的导频，为每个终端导出信道估计。 信道估计包括对未分配组中未包括的附加子带的响应。 子带复用也可以用于上行链路信令传输。